<!DOCTYPE html>
<html lang="zh" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>测试邮件</title>
</head>
<body>
<h3>你好，这是测试邮件</h3>
<div>
    姓名：<span th:text="${username}"></span>
</div>
<div>
    年龄：<span th:text="${age}"></span>
</div>
</body>
</html>